Hanssen Henner, Nussbaumer Monique, Moor Christoph, Cordes Mareike, Schindler Christian, Schmidt-Trucksäss Arno
Division of Sports and Exercise Medicine, Department of Sports, Exercise and Health, Medical Faculty, University of Basel, Switzerland.
Division of Sports and Exercise Medicine, Department of Sports, Exercise and Health, Medical Faculty, University of Basel, Switzerland.
Atherosclerosis. 2015 Feb;238(2):399-406. doi: 10.1016/j.atherosclerosis.2014.12.038. Epub 2014 Dec 23.
Our aim was to investigate the acute and 24-hour (h) effects of high-intensity interval training (HIIT) and moderate continuous training (MCT) on arterial pulse wave reflection, an established marker of arterial stiffness and cardiovascular risk.
In a randomized cross-over design, 21 young healthy male participants performed a HIIT or a MCT on separate visits. Before and 5 (t5), 20 (t20), 35 (t35), and 50 (t50) minutes after the acute exercise bouts, the crude augmentation index (AIx) and the AIx at a set heart rate (AIx@75) were analysed by applanation tonometry. Starting 1 h post-exercise, both indices were captured over 24-h with an oscillometric monitoring device.
AIx did not change significantly after MCT but declined progressively after HIIT, reaching significantly lower values compared to MCT at t35 (P = 0.045) and t50 (P = 0.008). AIx@75 increased after both acute exercise types but was higher after HIIT at t5 (P < 0.001), t20 (P < 0.001) and t35 (P = 0.009) compared to MCT. The 24-h follow-up revealed a significant decline in AIx@75 after HIIT (P = 0.007) but not after MCT (P = 0.813).
Exercise intensity affects pulse wave reflection, with different time courses for AIx and AIx@75 post-exercise. Although initially higher after HIIT, AIx@75 declines in the 24-h recovery period indicating more favourable effects on pulse wave reflection compared to MCT. This may result in substantial positive chronic training effects on arterial stiffness in health and cardiovascular disease.
我们的目的是研究高强度间歇训练（HIIT）和中等强度持续训练（MCT）对动脉脉搏波反射的急性和24小时影响，动脉脉搏波反射是动脉僵硬度和心血管风险的既定标志物。
在随机交叉设计中，21名年轻健康男性参与者在不同的访视中进行了HIIT或MCT。在急性运动发作前以及发作后5（t5）、20（t20）、35（t35）和50（t50）分钟，通过压平式眼压计分析粗增强指数（AIx）和设定心率下的AIx（AIx@75）。运动后1小时开始，使用示波监测设备在24小时内记录这两个指标。
MCT后AIx无显著变化，但HIIT后AIx逐渐下降，在t35（P = 0.045）和t50（P = 0.008）时与MCT相比显著降低。两种急性运动类型后AIx@75均升高，但与MCT相比，HIIT后在t5（P < 0.001）、t20（P < 0.001）和t35（P = 0.009）时更高。24小时随访显示，HIIT后AIx@75显著下降（P = 0.007），而MCT后无显著下降（P = 0.8
